With one of its franchise reality shows scoring a season high, ABC chalked up a win over its broadcast rivals Monday night, based on Nielsen overnights for the key 18-49 demo.

TVbytheNumbers.com reports that the Alphabet Network’s two-hour edition of "The Bachelorette" rose four-tenths of a ratings point from last week to a season-high 2.3 in 18-49. The network’s 10 p.m. drama "Mistresses" ticked up one-tenth to a 1.3.

Second-place CBS had the top show of the night in "Under the Dome," which slipped one-tenth to a 2.7 in the 18-49 demo but still dominated the 10 p.m. hour. The rest of the CBS lineup consisted of comedy repeats.

NBC’s slate of originals was only good enough for fourth place among the broadcast nets: "American Ninja Warrior" turned in a 1.5 in adults 18-49 to pace the network, losing one-tenth from last week’s season low to hit a new season low. "Get Out Alive With Bear Grylls" fell two-tenths to a series-low 1.2, while "Siberia" also sank to a series low, slipping one-tenth from its previous original to a 0.7.

Fox came in a distant fifth with a slate of comedy repeats.

For prime time overall, ABC led the way in the 18-49 demo with a 2.0 average, followed by CBS (1.7 average), Univision (1.3), NBC (1.1) and Fox (0.5). ABC eked out a narrow win in total viewers, averaging 6.6 million to lead CBS (6.5 million), NBC (3.6 million), Univision (3.3 million) and Fox (1.4 million).